import 'package:flutter/material.dart';

class Exam_17 extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return Scaffold(
      appBar: AppBar(
        title: Text("装饰容器DecoratedBox"),
      ),
      body: Content(),
    );
  }
}

class Content extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return DecoratedBox(
      decoration: BoxDecoration(
          gradient: LinearGradient(colors: [Colors.red, Colors.orange[700]]),
          //背景渐变
          borderRadius: BorderRadius.circular(3.0),
          //圆角
          boxShadow: [
            //阴影
            BoxShadow(
                color: Colors.black54,
                offset: Offset(2.0, 2.0),
                blurRadius: 4.0)
          ]),
      child: Padding(
        padding: EdgeInsets.symmetric(horizontal: 80.0, vertical: 18.0),
        child: Text(
          "Login",
          style: TextStyle(color: Colors.white),
        ),
      ),
    );
  }
}
